Antenna Check - JRC JLR-20 Instruction Manual

5.4.1 Antenna Check

Selecting ANT CHECK
This allows confirmation of the sensor status, and can be used to determine if the equipment is faulty.
The following items are displayed.
• TIMER: Time is counted from when this screen is displayed.
• HEAD: Average bow heading (AVE) and current measured heading value (TRUE) are
displayed.
Check that the displayed heading is correct.
• ROLL: Average roll (AVE) and measured roll value (TRUE) are displayed.
Confirm the indication matches to the ship's rolling.
• PITCH: Average pitch (AVE) and measured pitch value (TRUE) are displayed.
Confirm the indication matches to the ship's rolling.
• GPS1 - 3: Reception status of each GPS receiver is displayed.
SAT POS: Average number of satellites used for position measurement.
LEVEL:
SAT HED: Average number of satellites used for bearing measurement.
Confirm the values of GPS1 thru GPS3 are almost the same. Also confirm the level
(TYP) is around 40 to 50.
• Antennas in use:
3 (If it is not "3", the antenna installation position may not be suitable. Relocate the
sensor to the place with clear view.)
Memo
• Press to return to the Main Menu.
5-28
from the "5.4 Maintenance Menu" displays information about the sensor.
Antenna Check Screen
MIN (minimum), TYP (average), and MAX (maximum) signal levels
Antenna in use
3: With three antenna
2: With two antenna